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Multiclient Seismic Data - Change in Carrying Amount of Multiclient Seismic Data (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2018 USD ($)
Multiclient Seismic Data [Abstract] |
Balance at December 31, 2017 | $ 727
Capitalized in period | 63
Charged to expense | (151)
Balance at September 30, 2018 | $ 639

X
- Definition Capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis, net of amortization. + References No definition available. + Details
Name: | slb_MulticlientSeismicData
Namespace Prefix: | slb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Multiclient seismic data. + References No definition available. + Details
Name: | slb_MulticlientSeismicDataAbstract
Namespace Prefix: | slb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Multiclient seismic data capitalized in period. + References No definition available. + Details
Name: | slb_MulticlientSeismicDataCapitalizedInPeriod
Namespace Prefix: | slb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Multiclient seismic data charged to cost of goods sold and services. + References No definition available. + Details
Name: | slb_MulticlientSeismicDataChargedToCostOfGoodsSoldAndServices
Namespace Prefix: | slb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration